Podcast
Questions and Answers
Which type of muscle causes lateral flexion, bending of the back, neck or head?
Which type of muscle causes lateral flexion, bending of the back, neck or head?
- Origin
- Contraction (correct)
- Antagonist
- Synergist
What happens when a muscle shortens?
What happens when a muscle shortens?
- Its insertion moves toward its origin (correct)
- Its fibers become shorter
- Its origin moves toward its insertion
- Its fibers become longer
How are muscles named?
How are muscles named?
- By their location
- By their shape (correct)
- By their size
- By their direction of muscle fibers
How many origin points does the tricep muscle have?
How many origin points does the tricep muscle have?
What innervates the masseter and temporalis muscles?
What innervates the masseter and temporalis muscles?
Which muscle controls the extension of the thigh?
Which muscle controls the extension of the thigh?
What is the most powerful muscle group?
What is the most powerful muscle group?
What is the weakest muscle group?
What is the weakest muscle group?
What does the nervous system do?
What does the nervous system do?
What is sensory input?
What is sensory input?
Which part of the nervous system carries impulses to and from the spinal cord and brain?
Which part of the nervous system carries impulses to and from the spinal cord and brain?
What is the function of motor output in the nervous system?
What is the function of motor output in the nervous system?
Which type of glial cell supports and braces neurons, as well as anchors them?
Which type of glial cell supports and braces neurons, as well as anchors them?
What is the function of microglia in the nervous system?
What is the function of microglia in the nervous system?
Which part of the neuron is responsible for receiving input signals?
Which part of the neuron is responsible for receiving input signals?
What is the function of the axon in a neuron?
What is the function of the axon in a neuron?
What is the function of myelin in nerve fibers?
What is the function of myelin in nerve fibers?
What is the difference between white matter and gray matter in the nervous system?
What is the difference between white matter and gray matter in the nervous system?
What is a synapse in the nervous system?
What is a synapse in the nervous system?
What does the abbreviation 'ASME' stand for in the context of the nervous system?
What does the abbreviation 'ASME' stand for in the context of the nervous system?
Flashcards
Lateral Flexion
Lateral Flexion
A muscle contraction that bends the back, neck or head to the side.
Muscle Shortening
Muscle Shortening
The insertion point of a muscle moves towards its origin.
Muscle Naming
Muscle Naming
Muscles are named based on their shape; examples include: deltoid (triangle), trapezius (trapezoid), and serratus (saw-toothed).
Triceps Origin
Triceps Origin
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Masseter & Temporalis Innervation
Masseter & Temporalis Innervation
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Thigh Extension
Thigh Extension
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Most Powerful Muscle Group
Most Powerful Muscle Group
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Weakest Muscle Group
Weakest Muscle Group
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Nervous System Function
Nervous System Function
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Sensory Input
Sensory Input
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CNS Function
CNS Function
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Motor Output
Motor Output
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Astrocyte Function
Astrocyte Function
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Microglia Function
Microglia Function
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Dendrite Function
Dendrite Function
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Axon Function
Axon Function
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Myelin Function
Myelin Function
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White vs. Gray Matter
White vs. Gray Matter
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Synapse Function
Synapse Function
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ASME
ASME
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Study Notes
Muscle Function and Anatomy
- Lateral flexion, bending of the back, neck, or head is caused by oblique muscles.
- When a muscle shortens, it contracts.
- Muscles are typically named based on their origin and/or insertion points, shape, function, or location.
- The tricep muscle has three origin points.
- The masseter and temporalis muscles are innervated by the trigeminal nerve (cranial nerve V).
- The quadriceps femoris muscle controls the extension of the thigh.
Nervous System
- The most powerful muscle group is the gluteal muscles.
- The weakest muscle group is the muscles of the middle ear.
- The nervous system receives, processes, and responds to sensory input from the environment.
- Sensory input refers to information gathered from the environment via sensors (e.g., eyes, ears, skin).
- The central nervous system (CNS) carries impulses to and from the spinal cord and brain.
- Motor output in the nervous system refers to the transmission of signals from the CNS to muscles and glands.
Glial Cells and Neuron Function
- Astrocytes are a type of glial cell that supports and braces neurons, as well as anchors them.
- Microglia are a type of glial cell that functions as immune cells, protecting the nervous system from infection.
- The dendrites of a neuron are responsible for receiving input signals.
- The axon of a neuron is responsible for transmitting output signals away from the cell body.
- Myelin in nerve fibers facilitates the transmission of signals by increasing the speed of impulse conduction.
- White matter in the nervous system is composed of myelinated nerve fibers, while gray matter is composed of unmyelinated nerve fibers and neuron cell bodies.
- A synapse is the small gap between the terminal end of one neuron and the dendrites of another neuron, where chemical signals are transmitted.
- ASME in the context of the nervous system stands for Axon, Soma, Myelin, and Endoneurium.
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Description
Test your knowledge on muscle contraction and relaxation, as well as the relationship between muscle origin and insertion. This quiz will cover topics such as lateral flexion, bending of the back, neck, or head, and the movement of muscle attachments.
